They are not doing that.
I sneak into America illegally because I want to pay taxes...no.
This is another propaganda fabrication, same as the "who will pick the crops" tropes.
Crops were getting picked before illegal immigrants were pouring in unchecked.
Regardless, the "benefits" do not outweigh the risks of illegal immigration.
The OP is worried about throwing away this alleged 9 billion, thus proving The People's Champion, DJ Trump, will not be good for the economy but not the hundreds of billions flushed down the toilet that is Ukraine which gave America the fantastic Biden economy?
More ridiculous propaganda.
It airs on msnbc and two minutes later it floods the new meme stream.